Automobile-lamp.



W. F. PERSONS.

AUTOMOBILE LAMP. APPLICATION r'usv FEB. 6. 191;.

' Patented Dc; 10, 1918.

UNITED STATES PATENT OFFICE.

WILLIAM F. PERSONS, OF LAKEWOOD, H10, ASSIGNOR TO THE GUIDE MOTR LAM]? MANUFACTURNG-COMPNY, OF CLEVELND, OHIO, A CORPORATION DE 0H10.

AUTOMOBILE-LAME.

Original application filed December 16, 1915, Serial No. 67,118.

' Specificatizn of Letters Patent.

Patented Dec. 10, 1918.

(Patent No. 1,214,582, dated February 8,

1917.) Divided and this application flled February 6,- 1917. Serial No. 146,999.

State of Ohio, have invented a certain new and useful Improvement in Automobile- Lamps, of which the following .is a full,

clear, and exact description, reference being had to the accompanying drawings.

This invention relates generally to automobile lamps and more particularly t0 certain features of construction whereby the adjustment of the incandescent lamp 'can be accomplished, this application being a divisional portion of my application filed December 16, 1915, Serial No. 67,118 Patent No. 1,214,582, Feb. 6, 1917. The object of the present invention is to provide a simple and efficient means for shifting the focs of the light whereby the intensity thereof can be regulated as desired and the invention consists in the novel features of construction and combination hereinafter fully described and pointed out .in the claim.

In the drawings forming a part of this specification Figure 1 is a vertical sectional view of an automobile lamp constructed in accordance with and embodying my invention; Fig. 2 is a detail view'ef the light shifting means; and Fig. 3 i's a sectional view 'taken on the line 33 of Fig. 2.

Referring to the draWings 10 indicates a lamp bod y preferably of sheet metal and of torped0 shape but it will be understood that thisbody can be of any preferred or suit-' able design. A reflector 11 is locatedin' the lamp body and has a centrally disposed aperture 12. 13 indicates the glazing arranged at the front of the lamp body and secured in any suitable manner. An incandescent lamp 14 is arranged within the reflector, said lamp being connected to 3, socket 15 which is movable longitudinally in a sleeve 16 fastened to the lam body at the central rear point and exten ing toward the reflector. Upon the outer end of this socket member is a knob 17 by-means of which the socket carrying. the lamp can be moved back and forth foithe purpoSe of changing the focus of the light, as it is well known, that with the light properly positioned in a parabolic reflectr, the rays of light are thrown di-' rectly forward. This produces a glare, and.

in order to avoid this concentratmg glare,

it is necessary to shift the position fof the light, and this is acomplished by moving the socket member 15 longitndinallyin the sleeve 16, and for the purpose of maintaining the socket membr and the lamp in the desired adjustment, I provide a series of serrations 18 in the socket member 15, which serrations are engaged by a coi] spring 19 held within an opening in the sleeve 16 by means of a clip or housing 20 secured to the sleeve 16, enveloping or extending over the coi] spring 19 and holding the same properly positioned with reference to the sleeve; this spring permitting the socket member-t0 be pushej in or out, but at the same time having sufiicient strength to hold the socket member locked at the desired point ofadjustment. The sleeve 16 and socket member 15 are cut away to terminals.

From the foregoing description it will be permit the introduction of proper readily understood that the focus of the light can be quickly and easily changed when desired in order to pr0ject a concentrated or scattered light from the lamp.

Having thus described my invention, what I claim is:-

The combination with a socket member having transverse serrations upon one side,

a sleeve in which said socket memberis longitudinally movable, said sleeve having an opening in alinement with the transverse serrations, a longitudinal housing covering said openin and a longitudinally arranged spring mem er .located within the housing and adapted to contact with the serrated portion of the socket member.

In testimony whereof, I hereunto affix my signature.

WILLIAM F. PERSONS.

Copies of this patent mlly be obtained toi t1ve cents eaoh, by addressin the Gomxnissioner o! Patents,

r Wuhinzton, 3.0." 

